If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
1/x = (4/3)*x+1 // - (4/3)*x+1
1/x-((4/3)*x)-1 = 0
(-4/3)*x+1/x-1 = 0
1*x^-1-4/3*x^1-1*x^0 = 0
(1*x^0-4/3*x^2-1*x^1)/(x^1) = 0 // * x^2
x^1*(1*x^0-4/3*x^2-1*x^1) = 0
x^1
(-4/3)*x^2-x+1 = 0
(-4/3)*x^2-x+1 = 0
DELTA = (-1)^2-(1*4*(-4/3))
DELTA = 19/3
DELTA > 0
x = ((19/3)^(1/2)+1)/(2*(-4/3)) or x = (1-(19/3)^(1/2))/(2*(-4/3))
x = -3/8*((19/3)^(1/2)+1) or x = -3/8*(1-(19/3)^(1/2))
x in { -3/8*((19/3)^(1/2)+1), -3/8*(1-(19/3)^(1/2))}
x in { -3/8*((19/3)^(1/2)+1), -3/8*(1-(19/3)^(1/2)) }
| -3*(5x-1)+4x=2x+7*(5-3x) | | 1/X=4/3X+1 | | 6x+2=x+27 | | 10x^2-29x+18=0 | | x^4-7x^2+18=0 | | 4a-5=2a-5 | | 30x^2-73x+54=0 | | 30x^2-72x+54=0 | | 17+3*(15-x)=(4-x)-2*(x-5) | | x/7=75/100 | | 5x+7=-3-9 | | 4x-2*(3+x)=9-x | | 32x^2-9x-3=0 | | /7x=-2 | | 4x-2x*(3+x)=9-x | | 1.5=-7c+.7+8c+.5 | | f(0)=z^2-1+i | | 5x+7=7(x+1)-2x | | x-5x=-2x^2+7 | | 1217=44x+635 | | x^2-21x+180=0 | | 12x^2+x-18=0 | | 12X-41=5X-17 | | 7*(2+x)-3x=5x-6 | | 13x-9=5x+7 | | A=x(200-2X) | | 29y+6=4y+7 | | 12/3+y=23/4 | | 2w^2-3w-65= | | 8x^2-32x+13=0 | | -35-2x=42+9x | | (2/13)*26 |